#' @importFrom data.table fread
#' @importFrom doParallel registerDoParallel
#' @importFrom foreach %dopar% foreach
#' @importFrom GenomicRanges findOverlaps GRanges pintersect
#' @importFrom graphics abline axis barplot image par points rect text
#' @importFrom grDevices adjustcolor colorRampPalette dev.new dev.off pdf png
#' @importFrom IRanges IRanges
#' @importFrom RColorBrewer brewer.pal
#' @importFrom S4Vectors queryHits subjectHits width
#' @importFrom splines ns
#' @importFrom stats binom.test cor lm mad median na.omit residuals runif runmed sd
#' @importFrom tools file_ext
#' @importFrom utils head read.table write.table
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